mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 07:34:06 +08:00
50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
|
APEI Error INJection
|
||
|
|
~~~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
EINJ provides a hardware error injection mechanism
|
||
|
|
It is very useful for debugging and testing of other APEI and RAS features.
|
||
|
|
|
||
|
|
To use EINJ, make sure the following are enabled in your kernel
|
||
|
|
configuration:
|
||
|
|
|
||
|
|
CONFIG_DEBUG_FS
|
||
|
|
CONFIG_ACPI_APEI
|
||
|
|
CONFIG_ACPI_APEI_EINJ
|
||
|
|
|
||
|
|
The user interface of EINJ is debug file system, under the
|
||
|
|
directory apei/einj. The following files are provided.
|
||
|
|
|
||
|
|
- available_error_type
|
||
|
|
Reading this file returns the error injection capability of the
|
||
|
|
platform, that is, which error types are supported. The error type
|
||
|
|
definition is as follow, the left field is the error type value, the
|
||
|
|
right field is error description.
|
||
|
|
|
||
|
|
0x00000001 Processor Correctable
|
||
|
|
0x00000002 Processor Uncorrectable non-fatal
|
||
|
|
0x00000004 Processor Uncorrectable fatal
|
||
|
|
0x00000008 Memory Correctable
|
||
|
|
0x00000010 Memory Uncorrectable non-fatal
|
||
|
|
0x00000020 Memory Uncorrectable fatal
|
||
|
|
0x00000040 PCI Express Correctable
|
||
|
|
0x00000080 PCI Express Uncorrectable fatal
|
||
|
|
0x00000100 PCI Express Uncorrectable non-fatal
|
||
|
|
0x00000200 Platform Correctable
|
||
|
|
0x00000400 Platform Uncorrectable non-fatal
|
||
|
|
0x00000800 Platform Uncorrectable fatal
|
||
|
|
|
||
|
|
The format of file contents are as above, except there are only the
|
||
|
|
available error type lines.
|
||
|
|
|
||
|
|
- error_type
|
||
|
|
This file is used to set the error type value. The error type value
|
||
|
|
is defined in "available_error_type" description.
|
||
|
|
|
||
|
|
- error_inject
|
||
|
|
Write any integer to this file to trigger the error
|
||
|
|
injection. Before this, please specify all necessary error
|
||
|
|
parameters.
|
||
|
|
|
||
|
|
For more information about EINJ, please refer to ACPI specification
|
||
|
|
version 4.0, section 17.5.
|